BILASPUR/RAIPUR, India, Nov 15 (Reuters) - Tablets linked to the deaths of more than a dozen women who visited a sterilization camp in India are likely to have contained a chemical compound commonly used in rat poison, two senior officials in Chhattisgarh state said on Saturday.

Preliminary tests of the antibiotic ciprocin tablets were found to contain zinc phosphide, Siddhartha Pardeshi, the chief administrator for the Bilaspur district, told Reuters.